Power station ball valve, American standard ball valve is suitable for the two operations, often cut off, adjust the occasion.Ball valve and actuator connection using direct way, built-in electric actuator servo system, do not need to match servo amplifier, input 4 ~ 20 ma signal and 220 v AC power supply can control operation.Attachment with simple, compact structure, small size, light weight, small resistance, the advantages of stable and reliable.Actuator can according to user requirements with different type electronic type electric actuators.Strict plant ball valves are normally used for sealing occasions, in addition to the control of gas, liquid and steam medium, also suitable for control of sewage and medium containing fibrous material, widely used in petroleum, chemical industry, metallurgy, light industry, papermaking, power plant, refrigeration and other industrial fields.